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Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics最新文献

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Optical measurements of physiological patellofemoral crepitus. 生理性髌股肌酐的光学测量。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-08-01 DOI: 10.1088/0143-0815/12/3/002
L A Neely, W G Kernohan, D A Barr, C H Mee, R A Mollan
{"title":"Optical measurements of physiological patellofemoral crepitus.","authors":"L A Neely,&nbsp;W G Kernohan,&nbsp;D A Barr,&nbsp;C H Mee,&nbsp;R A Mollan","doi":"10.1088/0143-0815/12/3/002","DOIUrl":"https://doi.org/10.1088/0143-0815/12/3/002","url":null,"abstract":"<p><p>An optical method to measure directly small displacements of the patella has been developed. Light from a helium-neon laser was reflected from a plane mirror taped to the skin over the patella to a glass plate which generated a set of fringes by interference of light reflected from the front and rear surfaces of the plate. The movement of the fringe system was detected using a photodiode. The optical measurements of displacement were compared with those deduced from an accelerometer attached to the same joint. The method was found to be capable of detecting patellar displacements in the range from 20 microns to 180 microns.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 3","pages":"219-26"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/3/002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13093913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A critical evaluation of commercial urodynamics systems. 商业泌尿动力学系统的关键评价。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-08-01 DOI: 10.1088/0143-0815/12/3/004
P D Hill, D G Barnes, C A Lewis
{"title":"A critical evaluation of commercial urodynamics systems.","authors":"P D Hill,&nbsp;D G Barnes,&nbsp;C A Lewis","doi":"10.1088/0143-0815/12/3/004","DOIUrl":"https://doi.org/10.1088/0143-0815/12/3/004","url":null,"abstract":"<p><p>A comprehensive protocol was developed for assessing urodynamics instrumentation and applied to eight commercial urodynamics systems obtained on short-term loan. Assessment covered the areas of design and construction, measurement accuracy, and software performance. The measurement performance of virtually all systems was found to be adequate for the application. The main areas of weakness were susceptibility to artefact, poor user-friendliness, and lack of physical ruggedness.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 3","pages":"239-46"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/3/004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12995359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An in vivo area meter for real-time measurement of cross-sectional area in the cardiovascular system. 用于实时测量心血管系统横截面积的体内面积计。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-08-01 DOI: 10.1088/0143-0815/12/3/006
K Tamiya, M Higashidate, T Beppu
{"title":"An in vivo area meter for real-time measurement of cross-sectional area in the cardiovascular system.","authors":"K Tamiya,&nbsp;M Higashidate,&nbsp;T Beppu","doi":"10.1088/0143-0815/12/3/006","DOIUrl":"https://doi.org/10.1088/0143-0815/12/3/006","url":null,"abstract":"<p><p>A direct real-time recording of the cross-sectional area of the heart valve is useful for the fluid dynamic study of the cardiovascular system. Electronic circuitry is described that is capable of driving the transmitter coil assembly placed outside the animal and detecting an area-related signal induced in the one-turn coil in vivo. When a piece of fine pliable metal thread encircles the area of interest (e.g. the mitral/aortic valve orifice) so as to form a single loop, the electrical potential between the ends of the loop is linearly related to the size of the area irrespective of its shape. The principle of measurement, construction of transmitter coil assembly, and simple but accurate direct calibration are also described.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 3","pages":"253-60"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/3/006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13093915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Electroencephalographic monitoring in epilepsy. 癫痫的脑电图监测。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-08-01 DOI: 10.1088/0143-0815/12/3/001
J W Osselton
{"title":"Electroencephalographic monitoring in epilepsy.","authors":"J W Osselton","doi":"10.1088/0143-0815/12/3/001","DOIUrl":"https://doi.org/10.1088/0143-0815/12/3/001","url":null,"abstract":"The author reviews various aspects of EEG in monitoring of epilepsy and interseizure abnormalities. The techniques discussed are radiotelemetry, cable telemetry, cassette recording; cerebral function monitors; CCTV and computer roles. Some clinical applications are also examined.","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 3","pages":"203-17"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/3/001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13093912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A computer controlled scanner for the laser treatment of vascular lesions and hyperpigmentation. 用于激光治疗血管病变和色素沉着的计算机控制扫描仪。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-08-01 DOI: 10.1088/0143-0815/12/3/007
D J Smithies, P H Butler, J W Pickering, E P Walker
{"title":"A computer controlled scanner for the laser treatment of vascular lesions and hyperpigmentation.","authors":"D J Smithies,&nbsp;P H Butler,&nbsp;J W Pickering,&nbsp;E P Walker","doi":"10.1088/0143-0815/12/3/007","DOIUrl":"https://doi.org/10.1088/0143-0815/12/3/007","url":null,"abstract":"<p><p>A computer controlled scanner has been used with a copper vapour laser for the treatment of vascular lesions and hyperpigmented lesions. The computer controls the position and speed of travel of the laser spot during treatment. The illumination time is adjustable with a minimum of 1 ms. The light from the laser is scanned over the lesion so that the lesion is 'painted in' in a raster-like scan of arbitrary shape and produces a series of parallel lines 0.6 mm apart.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 3","pages":"261-7"},"PeriodicalIF":0.0,"publicationDate":"1991-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/3/007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13093916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Method for evaluation of the urethral closure mechanism in women during standardised changes of cross-sectional area. 评价女性尿道截面积标准化变化时尿道闭合机制的方法。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-05-01 DOI: 10.1088/0143-0815/12/2/005
P Thind, H Colstrup, G Lose, J K Kristensen
{"title":"Method for evaluation of the urethral closure mechanism in women during standardised changes of cross-sectional area.","authors":"P Thind,&nbsp;H Colstrup,&nbsp;G Lose,&nbsp;J K Kristensen","doi":"10.1088/0143-0815/12/2/005","DOIUrl":"https://doi.org/10.1088/0143-0815/12/2/005","url":null,"abstract":"<p><p>A method for evaluation of the closure mechanism in the female urethra during forced opening has been developed and tested. The cross-sectional area (CA) of the tube and the intraluminal pressure were measured simultaneously by a specially designed balloon catheter. The method enables induction of standardised changes of CA at different rates. Applied in the female urethra the induction results in a distinct pressure response which increases with increasing rate of change of CA as well as size of the induction. The inflation of the balloon simulates a forced opening of the urethra and hence leakage. Obviously, urinary incontinence takes place at forced opening of the urethra. Accordingly, this novel method can give important information on the pathophysiology of stress urinary incontinence in particular and the physiology of sphincter functions in general.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 2","pages":"163-70"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/2/005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13017147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Is there a future for engineering in medicine? 医学工程有未来吗?
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-05-01 DOI: 10.1088/0143-0815/12/2/009
R H Smallwood
{"title":"Is there a future for engineering in medicine?","authors":"R H Smallwood","doi":"10.1088/0143-0815/12/2/009","DOIUrl":"https://doi.org/10.1088/0143-0815/12/2/009","url":null,"abstract":"Is there a future for engineering in medicine? Yes, but only if one becomes much more outward-looking. Unless there is a major change of climate within the NHS, the pressure will continue to be to provide a still cheaper service with little of the research and development that has so enriched the Health Service over the past forty years. One must therefore look beyond the NHS, develop one's collaboration with industry, promote one's undoubted excellence throughout Europe. The task will not be easy, but one would not have become an engineer if one wanted an easy life, would one?.","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 2","pages":"191-3"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/2/009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13017151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The resolution of transcranial Doppler scanning: a method for in vitro evaluation. 经颅多普勒扫描的分辨率:一种体外评价方法。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-05-01 DOI: 10.1088/0143-0815/12/2/004
T K Hames, B J Nelligan, R J Nelson, V M Gazzard, J Roberts
{"title":"The resolution of transcranial Doppler scanning: a method for in vitro evaluation.","authors":"T K Hames,&nbsp;B J Nelligan,&nbsp;R J Nelson,&nbsp;V M Gazzard,&nbsp;J Roberts","doi":"10.1088/0143-0815/12/2/004","DOIUrl":"https://doi.org/10.1088/0143-0815/12/2/004","url":null,"abstract":"<p><p>The circle of Willis may be examined using low frequency pulsed Doppler ultrasound transmitted through the thin squamous temporal bone or 'acoustic windows' of the skull. The thickness and shape of these windows affect the characteristics of the ultrasound beam and partly determine the spatial resolution of transcranial Doppler scanning. We have studied the effects of temporal bone on the ultrasound beam and sample volume characteristics of the EME Transcan 2 MHz transducer using a stepper motor, computer-controlled ultrasound plotting system. The lateral and axial spatial dimensions of the sample volume, and a direct estimate of the lateral resolution of the system, were determined at various depths of interest using Doppler targets. The results in this initial study of a small number of specimens indicates a decrease in sample width, and hence an increase in lateral resolution, presumably due to the lensing effect of the skull cusping. The estimated lateral resolution of the system is of the order of 4 mm.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 2","pages":"157-61"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/2/004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13017146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Closed loop blood pressure control for cerebral perfusion studies. 脑灌注研究的闭环血压控制。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-05-01 DOI: 10.1088/0143-0815/12/2/006
I R Chambers, R D Strachan, P J Kane, A Clark, A D Mendelow
{"title":"Closed loop blood pressure control for cerebral perfusion studies.","authors":"I R Chambers,&nbsp;R D Strachan,&nbsp;P J Kane,&nbsp;A Clark,&nbsp;A D Mendelow","doi":"10.1088/0143-0815/12/2/006","DOIUrl":"https://doi.org/10.1088/0143-0815/12/2/006","url":null,"abstract":"<p><p>A method is presented which maintains mean arterial blood pressure at predetermined values during cerebrovascular occlusion studies in a rat model. The system consists of a pressure measurement apparatus, a pump capable of infusing and withdrawing fluids, and a personal computer to control the infusion and withdrawal rate. An evaluation of the system is presented, and potential advantages and difficulties are discussed.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 2","pages":"171-5"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/2/006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13017148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
A Doppler signal simulator. 多普勒信号模拟器。
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics Pub Date : 1991-05-01 DOI: 10.1088/0143-0815/12/2/007
C A Bastos, P J Fish
{"title":"A Doppler signal simulator.","authors":"C A Bastos,&nbsp;P J Fish","doi":"10.1088/0143-0815/12/2/007","DOIUrl":"https://doi.org/10.1088/0143-0815/12/2/007","url":null,"abstract":"<p><p>A simulated Doppler signal generator has been developed using computer controlled band-pass filtering of a broad-band noise source. The instrument may be used to generate simulated Doppler signals of known spectral characteristics in order to test Doppler signal analysers.</p>","PeriodicalId":77070,"journal":{"name":"Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics","volume":"12 2","pages":"177-83"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0143-0815/12/2/007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13017149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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